diff: use cmdutil.check_at_most_one_arg() for checking --rev/--change
The same check was done in extdiff as well, so I fixed that too.
There are apparently no tests for this.
Differential Revision: https://phab.mercurial-scm.org/D8510
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- Committed
martinvonz Fri, May 8, 11:50 AM - Differential Revision
- D8510: diff: use cmdutil.check_at_most_one_arg() for checking --rev/--change
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- rHG16596f5e1afa: copy: give better error message when no source paths found with --at-rev
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